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Analog Electronics

Analog Electronics
Which of the following is trivalent impurity ?

 Boron
 Silicon
None of these
 Antimony

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Analog Electronics
The base-emitter voltage of the second approximation is

 1 V.
  0.7 V.
 0 V.
 0.3 V.

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Analog Electronics
In a p⁺n junction diode under reverse bias , the magnitude of electric field is maximum at

The edge of the depletion region on the p-side
The p⁺n junction
The center of the depletion region on the n-side
The edge of the depletion region on the n-side

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Analog Electronics
A D - MOSFET can operate in the

  enhancement - mode only.
  low - impedance.
  depletion - mode or enhancement - mode.
  depletion - mode only .

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Analog Electronics
Which of the following is Pentavalent impurity?

 antimony
 gallium
 indium
 boron

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Analog Electronics
The collector current is 1.5 mA. If the current gain is 50, the base current is

 3 mA.
 3 µA.
 150 µA.
  30 µA.

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